A fully automatic phosphorus pentachloride unpacking system

Abstract

The application provides a full-automatic phosphorus pentachloride unpacking system, which comprises a ring-shaped conveying track and a feeding box, the upper half of the feeding box is a guide rail channel, the lower half is a sealed box, the guide rail channel and the sealed box are separated by a long partition, one section of the ring-shaped conveying track is fixed below the top plate of the guide rail channel, automatic doors are arranged at the two ends of the sealed box, automatic door curtains are arranged at the two ends of the guide rail channel, a plurality of electric hoists are further arranged, the electric hoists are slidingly installed on the ring-shaped conveying track, automatic hooks are connected to the electric hoists through lifting chains, and plastic sliding sleeves are arranged outside the lifting chains, the application is suitable for full-closed automatic unpacking, grinding and canning of phosphorus pentachloride, and the quality of lithium salt to be put into a production line is ensured, and the product quality is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of phosphorus pentachloride unloading technology, specifically a fully automatic phosphorus pentachloride unpacking system. Background Technology

[0002] Phosphorus pentachloride (lithium salt) is an important raw material in the lithium battery application field of the new energy industry. Before phosphorus pentachloride is put into the production line, the ton bags (packages specifically used for transporting chemical raw materials) containing the raw material need to be broken open to remove the phosphorus pentachloride raw material, which is then ground and processed. Because phosphorus pentachloride is toxic and reacts readily with air, causing the product to deteriorate, the entire process must avoid contact with air. A large amount of nitrogen is typically introduced during the unpacking process to prevent the raw material from reacting with air. The phosphorus pentachloride raw material is then rapidly ground and loaded into a delivery tank to ensure that it can be quickly transported to the production line for use.

[0003] However, the unloading of phosphorus pentachloride raw materials is still done manually. Since ton bags are specifically designed for packaging chemical raw materials, the bags are relatively thick and not easily damaged. Therefore, manually cutting the bottom of the bags is very inefficient. Moreover, the dust that flies up when the bags are broken is easily inhaled by the operators, which will cause great harm to their health in the long run. Although introducing a large amount of nitrogen into the broken bag space can effectively ensure the stability of phosphorus pentachloride raw materials, the operators still cannot work in the oxygen-deficient environment and may even face the risk of suffocation. It is difficult to fundamentally solve the dilemma of high danger and low efficiency in the unloading process. Summary of the Invention

[0004] To solve the above problems, the present invention provides the following technical solution: a fully automatic phosphorus pentachloride unpacking system, including a circular conveyor track and a feeding box. The upper half of the feeding box is a guide rail channel, and the lower half is a sealed box. The guide rail channel and the sealed box are separated by a long partition. One section of the circular conveyor track is fixed below the top plate of the guide rail channel. Automatic doors are provided at both ends of the sealed box, and self-closing door curtains are provided at both ends of the guide rail channel. The system also includes several sets of electric hoists, which are slidably installed on the circular conveyor track. Each electric hoist is connected to an automatic hook via a lifting chain, and the lifting chain is covered with a plastic sliding sleeve.

[0005] Preferably, the automatic hook includes a square hook main rod, with two parallel fixing plates welded to each of the four sides of the hook main rod; it also includes a chuck and a lifting block, the lifting block being movably sleeved on the outside of the hook main rod, and the chuck being fixed to the outside of the lifting block; it further includes an opening / closing hook and a limiting hook, the opening / closing hook and the limiting hook being movably mounted on the inner side of the two fixing plates and away from the hook main rod via a rotating shaft; it also includes a pull rod, one end of which is welded to the outside of the lifting block, and the other end being movably connected to a first connecting rod through a hole, the end of the first connecting rod away from the pull rod being movably connected to the center of a three-hole connecting rod; the bottom end of the three-hole connecting rod is movably connected to the hook main rod, and the top end is movably connected to a second connecting rod; the end of the second connecting rod away from the three-hole connecting rod is movably connected to the opening / closing hook; and it also includes a U-shaped unloading rod, the open end of which is simultaneously connected to the two fixing plates.

[0006] Preferably, the sealed box is divided into a negative pressure chamber, an inflation chamber, and a packing breaking chamber by a telescopic roller shutter; an air extraction pipe is installed on the side of the negative pressure chamber, an inflation pipe is installed on the side of the inflation chamber, and an automatic packing breaking assembly is provided below the packing breaking chamber.

[0007] Preferably, the automatic unpacking assembly includes a pack breaking device, a grinding device, and a sealing tank; the bottom of the pack breaking chamber is provided with a discharge port and a recycling port, the pack breaking device is installed directly above the discharge port, the grinding device is located directly below the discharge port, and the sealing tank is connected to the grinding device.

[0008] Preferably, a detachment disc is provided directly above the recycling hole, and one end of the ton bag crushing device is connected directly below the recycling hole. The other end of the ton bag crushing device is connected to a recycling box via a screw.

[0009] Preferably, the bag-breaking device consists of four telescopic blades, each telescopic blade including a hopper and a blade bar, the blade bar extending out of the hopper, and each blade bar facing the center of the discharge hole, the end of the blade bar away from the hopper being provided with a vertically upward blade tip.

[0010] Preferably, two cylinders are installed in the hopper, and the cutter bar is fixed to both cylinders simultaneously by a mounting plate, and a vibrator is fixed at the connection between the cutter bar and the mounting plate; a sliding sleeve is provided between the hopper and the cutter bar.

[0011] Preferably, the long partition plate has a slot parallel to the annular conveying track, and rubber strips are adhered to both sides of the slot.

[0012] Preferably, the negative pressure chamber, the inflation chamber, and the breaking chamber are all provided with chain limiting blocks, which are adhered to the top of the slot.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The entire filling process is carried out in a closed space, with access through sealed doors on both sides to prevent the leakage of harmful gases during unloading.

[0015] 2. By utilizing the independent operating rooms of different workstations, negative pressure operation, ventilation operation and unloading operation are carried out on the ton bag in sequence, so that the entire unloading process is completely in a closed environment and the air around the ton bag is minimized to ensure that the quality of the raw materials is not affected by external factors.

[0016] 3. The use of mechanical automatic hooks enables automatic hanging and unloading of ton bags, while also extending the service life of the device, avoiding the corrosion and damage of the electric drive device by phosphorus pentachloride, reducing the number of maintenance operations, and improving unloading efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall system of the present invention;

[0018] Figure 2 Overall schematic diagram of the unpacking system of this invention;

[0019] Figure 3 Enlarged view A of the lifting chain portion of this invention;

[0020] Figure 4 Schematic diagram of the installation position of the telescopic roller shutter of the present invention;

[0021] Figure 5 Enlarged side view of the long partition structure of the present invention (B);

[0022] Figure 6 Schematic diagram of the automatic unpacking component of this invention;

[0023] Figure 7 Enlarged view of the structure of the package-breaking device of the present invention;

[0024] Figure 8 A schematic diagram of the structure of the present invention after the automatic hook removes the chuck;

[0025] Figure 9 Top view of the chain limiting block of the present invention;

[0026] In the diagram: 1. Circular conveyor track; 2. Feeding box; 3. Guide rail channel; 4. Sealed box; 5. Long partition; 6. Self-closing curtain; 7. Electric hoist; 8. Lifting chain; 9. Automatic hook; 10. Plastic sliding sleeve; 11. Hook main rod; 12. Fixing plate; 13. Chuck; 14. Lifting block; 15. Opening and closing hook; 16. Limiting hook; 17. Rotating shaft; 18. Pull rod; 19. First connecting rod; 20. Three-hole connecting rod; 21. Second connecting rod; 22. U-shaped unloading rod; 23. Telescopic roller shutter; 24. Negative pressure chamber; 25. Inflation chamber. 25. Bag breaking chamber; 26. Automatic bag unpacking assembly; 27. Bag breaking device; 28. Grinding device; 29. ​​Sealed tank; 30. Discharge port; 31. Recycling port; 32. Unhooking disc; 33. Ton bag crushing device; 34. Screw; 35. Recycling box; 36. Telescopic knife; 37. Hopper; 38. Knife bar; 39. Knife tip; 40. Cylinder; 41. Mounting plate; 42. Vibrator; 43. Sliding sleeve; 44. Groove; 45. Rubber strip; 46. Chain limit block; 47. Trumpet mouth; 48. Limiting hole; 49. Slit; 50. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figure 1-9As shown, a fully automatic phosphorus pentachloride unpacking system includes a circular conveyor track 1 and a feeding box 2. The upper part of the feeding box 2 is a guide channel 3, and the lower part is a sealed box 4. The guide channel 3 and the sealed box 4 are separated by a long partition 5. One section of the circular conveyor track 1 is fixed below the top plate of the guide channel 3; here, a straight section of the circular conveyor track 1 is selected. The sealed box 4 is equipped with automatic sealing doors, commonly used by those skilled in the art, at both ends. The guide channel 3 is equipped with self-closing curtains 6 at both ends. The self-closing curtains 6 are composed of multiple flexible glass panels, with their top ends connected to the top of the guide channel 3. Each flexible glass panel has a strong magnetic strip between it. The upper part has a notch to accommodate the passage of the guide rail, allowing the flexible glass panels to automatically open under force. The automatic closing mechanism under gravity ensures the airtightness of the guide rail channel 3. It also includes several sets of electric hoists 7, which are slidably mounted on the annular conveyor rail 1. The electric hoists 7 can be moved on the guide rail via remote control. Each electric hoist 7 is equipped with an encoder commonly used by those skilled in the art, which is remotely processed and controlled via electrical signals. The encoder determines the distance traveled by the electric hoist 7 on the rail by the number of revolutions of the motor inside the electric hoist 7, and controls the descent and elevation distance of the lifting hook of the electric hoist 7 via a lifting motor, thereby controlling the electric hoist 7 to stop at the desired position and descend to the desired height. Each electric hoist 7 is connected to an automatic hook 9 via a lifting chain 8, and a plastic sliding sleeve 10 is fitted over the lifting chain 8.

[0029] The automatic hook 9 includes a square hook main rod 11, with two parallel fixing plates 12 welded to each of the four sides of the hook main rod 11; it also includes a chuck 13 and a lifting block 14, the lifting block 14 being movably sleeved on the outside of the hook main rod 11, and the chuck 13 being fixed to the outside of the lifting block 14; it also includes an opening hook 15 and a limiting hook 16, the opening hook 15 and the limiting hook 16 being movably mounted on the inner side of the two fixing plates 12 and away from the hook main rod 11 via a rotating shaft 17; and it also includes a pull rod 18. One end is welded to the outside of the lifting block 14, and the other end is movably connected to the first connecting rod 19 through a hole. The end of the first connecting rod 19 away from the pull rod 18 is movably connected to the center of the three-hole connecting rod 20. The bottom end of the three-hole connecting rod 20 is movably connected to the hook main rod 11, and the top end is movably connected to the second connecting rod 21. The end of the second connecting rod 21 away from the three-hole connecting rod 20 is movably connected to the opening and closing hook 15. It also includes a U-shaped unloading rod 22, the open end of which is simultaneously connected to the two fixed plates 12.

[0030] The working principle of the aforementioned automatic hook 9 is as follows: In a static state, the lifting block 14 is placed on the fixed plate 14. At this time, all connecting rods are in a relaxed state, so the opening hook 15 and the limiting hook 16 are in a naturally engaged state, allowing it to... Figure 8 As can be seen, the inner side of the limiting hook 16 has a notch that matches the outer edge of the limiting hook 16, and the upper ends of both the limiting hook 16 and the opening and closing hook 15 have protrusions. The protrusions of the two abut against each other. Therefore, when the ton bag is suspended on the automatic hook 9, under the action of gravity, the upper and lower ends of the limiting hook 16 and the opening and closing hook 15 will abut tightly to ensure that there is no phenomenon of disengagement. When it is necessary to unload the ton bag on the automatic hook 9, by lifting the chuck 13, the lifting block 13 and the pull rod 18 are driven. At this time, the first connecting rod 19 rises, driving the three-hole connecting rod 20 to slowly stand up, thereby pulling the second connecting rod 21 laterally closer to the hook main rod 11. Then the opening and closing hook 15 can be pulled outward and passed through the middle of the U-shaped unloading rod 22. The U-shaped unloading rod 22 can assist the ton bag to be clamped off the opening and closing hook 15. The automatic hook 9 relies entirely on the connection between mechanical parts to achieve its operation. It does not have an electrical device, thus avoiding the corrosion of the electrical device caused by the volatilization of phosphorus pentachloride, which would affect the working efficiency of the automatic hook 9.

[0031] The sealed box 4 is divided into a negative pressure chamber 24, an inflation chamber 25, and a bag-breaking chamber 26 by a telescopic roller shutter 23. The negative pressure chamber 24 is the first station, with an air extraction pipe installed on the side. An external air pump is connected to the air extraction pipe to first extract the air entrained in the negative pressure chamber 24, so that a negative pressure state is formed around the ton bag. The inflation chamber 25 is the second station, with an inflation pipe installed on the side, connected to a nitrogen tank, to fill the interior with nitrogen, so that the interior of the inflation chamber contains basically only nitrogen and prevents air from entering the next station. The bag-breaking chamber 26 is the third station, with an automatic unpacking component 27 installed below. During operation, the bag-breaking chamber 26 is also filled with nitrogen through the inflation pipe on the side to ensure that phosphorus pentachloride does not come into contact with air during the bag-breaking process. The telescopic roller blind 23 has three sets of opposing cylinders installed on both sides. The cylinder rods are connected to the closing part of the telescopic roller blind 23, and the closing part of the roller blind is equipped with a conventional magnetic attraction device to ensure sealing. The roller blind is opened and closed by the lifting and retraction of the cylinders, thereby achieving mutual isolation between each workstation.

[0032] The automatic unpacking assembly 27 includes a bag-breaking device 28, a grinding device 29, and a sealing tank 30. The bottom of the bag-breaking chamber 26 has a discharge port 31 and a recovery port 32. The bag-breaking device 28 is installed directly above the discharge port 31. The grinding device 29 is a common powder grinder, with its inlet located directly below the discharge port 31, and a sealing ring is fitted at the connection to prevent air ingress. The sealing tank 30 is connected to the grinding device 29. A hook-off disc 33 is located directly above the recovery port 32. The hook-off disc 33 is a hollow cylinder, and the radius of its base is greater than the length of the fixed plate 12 but less than the radius of the chuck 15. The bottom of the recovery port 32 is connected to one end of a ton bag crushing device 34, which is a material crushing device used to crush the broken ton bags. The other end of the crushed bag is conveyed to the recovery box 36 via a screw 35.

[0033] The packing breaking device 28 consists of four telescopic blades 37, each including a hopper 38 and a blade shank 39. The blade shank 39 extends out of the hopper 38, and each blade shank 39 faces the center of the discharge hole 31. A vertically upward-pointing blade tip 40 is provided at the end of the blade shank 39 away from the hopper 38. Two cylinders 41 are installed inside the hopper 38, and the blade shank 39 is simultaneously fixed to both cylinders 41 via a mounting plate 42. A vibrator 43 is fixed at the connection between the blade shank 39 and the mounting plate 42. A sliding sleeve 44 is provided between the hopper 38 and the blade shank 39. In a static state, all cylinders 41 are in the raised position, and all four sets of blade tips 40 are in the converged state with the blades pointing towards the corresponding hopper 38. When the ton bag falls, all cylinders 41 retract simultaneously, and the oscillator 43 connected to the blade rod 39 starts to start, causing the blade tips 40 to retract and vibrate at the same time, ensuring that the blade tips 40 perform high-efficiency sawing cuts on the bottom of the ton bag and improving the opening efficiency of the ton bag.

[0034] The long partition 5 has a slot 45 parallel to the annular conveying track 1, and rubber strips 46 are adhered to both sides of the slot 45. Figure 5 As shown, the rubber strips 46 on both sides have a slight overlap but are not connected. This is to block air and allow the lifting chain 8 to pass through the middle, forming a brief gap. After the lifting chain 8 passes through, it can quickly rebound. The negative pressure chamber 24, the inflation chamber 25, and the packing breakage chamber 26 are all equipped with chain limiting blocks 47. The chain limiting blocks 47 are adhered to the top of the slot 45. Figure 9As shown, the chain limiting block 47 is made of rubber and is divided into two halves. The middle part is joined together to form a shuttle shape, with both ends opening into a flared mouth 48 as a guide. A limiting hole 49 is provided, and there is a slit 50 between the flared mouth 48 and the limiting hole 49. Its function is that: there is a stopping position for the electric hoist 7 in the room where each workstation is located. Although there is an encoder to calculate the movement distance, the chain limiting block 47 can play a fine adjustment role for the lifting chain 8. Whether the electric hoist 7 stops too early or too late, the slit 50, combined with the inertia generated when the electric hoist 7 moves, will have a squeezing effect if it stops too early and a stabilizing effect if it stops too late. This ensures that the lifting chain 8 and its external plastic sliding sleeve 10 can be temporarily restricted within the limiting hole 49, ensuring that the automatic hook 9 below can stay in the accurate position.

[0035] In summary, after the operator hangs the four ropes of the ton bag on the automatic hook 9 at the loading point, the electric hoist 7 will drive the ton bag to move forward automatically according to the calculated distance. First, the air around the ton bag is extracted in the negative pressure chamber 24, and nitrogen is injected into the air filling chamber 25. Finally, the ton bag enters the breaking chamber 26 and the automatic hook 9 is lowered to cut open the bottom of the ton bag, so that the phosphorus pentachloride raw material is ground and stored in the sealed tank 30 to wait for it to be sent to the production line. At this time, the automatic hook 9 drives the emptied ton bag to the top of the unhooking plate 33. The unhooking plate 33 lifts the chuck 13 on the automatic hook 9 to realize the unhooking action of the ton bag. After completion, the automatic hook 9 can move out of the station and enter the next cycle.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automated phosphorus pentachloride unpacking system, comprising a circular conveyor track, characterized in that: It also includes a feeding box, the upper part of which is a guide rail channel and the lower part is a sealed box, with the guide rail channel and the sealed box separated by a long partition; one section of the annular conveying track is fixed below the top plate of the guide rail channel; automatic doors are provided at both ends of the sealed box, and self-closing door curtains are provided at both ends of the guide rail channel; it also includes several sets of electric hoists, which are slidably installed on the annular conveying track, and each electric hoist is connected to an automatic hook below by a lifting chain, with a plastic sliding sleeve covering the outside of the lifting chain; the automatic hook includes a square hook main rod, with two parallel fixing plates welded to each of the four sides of the hook main rod; it also includes a chuck and a lifting block, with the lifting block movably fitted... The chuck is fixed to the outside of the lifting block outside the main hook rod; it also includes an opening hook and a limiting hook, which are movably mounted on the inner side of the two fixed plates and away from the main hook rod via a rotating shaft; it also includes a pull rod, one end of which is welded to the outside of the lifting block, and the other end is movably connected to a first connecting rod through a hole, the end of the first connecting rod away from the pull rod being movably connected to the center of a three-hole connecting rod; the bottom end of the three-hole connecting rod is movably connected to the main hook rod, and the top end is movably connected to a second connecting rod; the end of the second connecting rod away from the three-hole connecting rod is movably connected to the opening hook; it also includes a U-shaped unloading rod, the open end of which is simultaneously connected to the two fixed plates.

2. The fully automatic phosphorus pentachloride unpacking system according to claim 1, characterized in that: The sealed box is divided into a negative pressure chamber, an inflation chamber, and a packing breaking chamber by a telescopic roller shutter. An air extraction pipe is installed on the side of the negative pressure chamber, an inflation pipe is installed on the side of the inflation chamber, and an automatic packing breaking assembly is installed below the packing breaking chamber.

3. The fully automatic phosphorus pentachloride unpacking system according to claim 2, characterized in that: The automatic unpacking assembly includes a pack breaking device, a grinding device, and a sealed container; the bottom of the pack breaking chamber is provided with a discharge port and a recovery port, the pack breaking device is installed directly above the discharge port, the grinding device is located directly below the discharge port, and the sealed container is connected to the grinding device.

4. The fully automatic phosphorus pentachloride unpacking system according to claim 3, characterized in that: A hook-off disc is provided directly above the recycling hole, and one end of the ton bag crushing device is connected directly below the recycling hole. The other end of the ton bag crushing device is connected to a recycling box via a screw.

5. The fully automatic phosphorus pentachloride unpacking system according to claim 4, characterized in that: The pack breaking device consists of four telescopic blades, each telescopic blade including a hopper and a blade bar. The blade bar extends out of the hopper, and each blade bar faces the center of the discharge hole. The end of the blade bar away from the hopper is provided with a vertically upward blade tip.

6. The fully automatic phosphorus pentachloride unpacking system according to claim 5, characterized in that: Two cylinders are installed inside the hopper, and the cutter bar is fixed to both cylinders simultaneously via a mounting plate. A vibrator is fixed at the connection between the cutter bar and the mounting plate. A sliding sleeve is provided between the hopper and the cutter bar.

7. The fully automatic phosphorus pentachloride unpacking system according to claim 2, characterized in that: The long partition plate has a slot parallel to the annular conveying track, and rubber strips are glued to both sides of the slot.

8. The fully automatic phosphorus pentachloride unpacking system according to claim 7, characterized in that: The negative pressure chamber, the air filling chamber, and the breaking chamber are all equipped with chain limiting blocks, which are adhered to the top of the slot.

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